The Virgin unmasked [Violin I & II, viola parts]
MLA
The Virgin Unmasked [Violin I & II, Viola Parts]. 0AD. https://collections.library.yale.edu/catalog/2064637.
APA, 6th edition
The Virgin unmasked [Violin I & II, viola parts]. (0 C.E.). [Manuscripts, Musical works]. https://collections.library.yale.edu/catalog/2064637.